jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

tmcw

Extracted from simple-statistics.

chrismccoy

# alias to edit commit messages without using rebase interactive
# example: git reword commithash message
reword = "!f() {\n  GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

# count total commits in a repo
git rev-list --all --count

# edit all commit messages 
git rebase -i --root

pilwon

//
// Tests if regular expression matches all valid ES6 import syntaxes.
//
// ES6 Language Specification Reference:
//   https://people.mozilla.org/~jorendorff/es6-draft.html#sec-imports
//

const ES6_IMPORT_REGEX = /\bimport\s+(?:.+\s+from\s+)?[\'"]([^"\']+)["\']/g;

const VALID_ES6_IMPORT_SYNTAXES = [

paulirish

/* bling.js */

window.$ = document.querySelectorAll.bind(document);

Node.prototype.on = window.on = function (name, fn) {
  this.addEventListener(name, fn);
}

NodeList.prototype.__proto__ = Array.prototype;

matagus

[user]
  name = matagus
  email = me@matagus.com

[color]
    ui = auto

[color "status"]
    added = cyan
    changed = green

d2s

Installing Node.js with nvm to Linux & macOS & WSL

A quick guide on how to setup Node.js development environment.

Install nvm for managing Node.js versions

nvm allows installing several versions of Node.js to the same system. Sometimes applications require a certain versions of Node.js to work. Having the flexibility of using specific versions can help.

1. Open new Terminal window.

jonmbake

This describes how to build enzyme as a UMD (Universal Module Definition) module so it can be used in systems with legacy module loaders like RequireJS.

Browserify with the --standalone option will be used to build the standalone Enzyme UMD module. This is a good post describing Browserify's --standalone option: http://www.forbeslindesay.co.uk/post/46324645400/standalone-browserify-builds.

1. Install npm dependencies

npm install --save-dev browserify
npm install --save-dev enzyme
npm install --save-dev react

patik

body { counter-reset: h1counter h2counter h3counter h4counter h5counter h6counter; }

h1 { counter-reset: h2counter; }
h2 { counter-reset: h3counter; }
h3 { counter-reset: h4counter; }
h4 { counter-reset: h5counter; }
h5 { counter-reset: h6counter; }
h6 {}

h2:before {

barbietunnie

How to download your Udemy course videos using youtube-dl

$ youtube-dl --list-extractors | grep udemy

Steps

1. Get link to the course to download. e.g. https://www.udemy.com/course-name/
2. Login into udemy website, save the cookie from chrome using Chrome (Cookie.txt)[1] export extension. Save it to file udemy-cookies.txt
3. Get the link of the video that you want to download. usually in format. Use the command provided below where you have to replace the {course_link} and {path_to_cookies_file} with respective paths.

$ youtube-dl {course_link} --cookies {path_to_cookies_file}